鞍千极贫赤铁矿石强磁预选试验  

High-Intensity Magnetic Pre-separation Experiment on Extremely Lean Hematite Ore from Anqian

作　　者：祝昕冉 徐冬林 高鹏[1] 李艳军[1] 韩跃新[1] Zhu Xinran Xu Donglin Gao Peng Li Yanjun Han Yuexin(College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China Anqian Mining Co. ,Ltd. ,Anshan Iron and Steel Group ,Anshan 114043 ,China)

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819 [2]鞍钢集团鞍千矿业责任有限公司,辽宁鞍山114043

出　　处：《金属矿山》2016年第12期82-85,共4页Metal Mine

基　　金："十二五"国家科技支撑计划项目(编号:2015BAB15B02)

摘　　要：鞍千极贫赤铁矿石铁品位为19.34%,铁主要以赤铁矿形式存在,铁在赤铁矿中分布率为89.90%。为开发利用该矿石,进行了强磁预选试验,考察了介质棒直径、介质棒间隙和磁场强度对预选指标的影响。结果表明,在给料粒度为-3 mm、磁场强度为232.67k A/m、介质棒直径为3mm、介质棒间隙为5mm条件下,可获得铁品位为25.07%、回收率为85.99%的预选精矿,抛除产率为31.08%、铁品位为9.06%的尾矿。试验结果可以为我国极贫赤铁矿的高效开发利用提供参考。There is 19. 34% Fe in an extremely lean hematite ore from Anqian,iron mainly exists in form of hematite,with distribution rate of 89. 90%. To develop and utilize the ore,high-intensity pre-separation experiment was carried out,influence of medium rob diameter,medium rob gap and magnetic field intensity on pre-separation index were investigated. Results indicated that,with feeding size of-3 mm,magnetic field intensity of 232. 67 k A / m,medium rob diameter of 3mm,medium rob gap of 5 mm,pre-concentrate with iron grade of 25. 07% and recovery of 85. 99% was obtained,and discarding tailings with yield rate of 31. 08% and iron grade of 9. 06%. The results can provide reference for high efficient development of extremely lean hematite ore in our country.

关 键 词：极贫赤铁矿石 强磁预选 磁介质 

分 类 号：TD951.5[矿业工程—选矿] TD921.7